This sleek Nike UV rash guard is ideal for athletes that want to train safely under sunny skies. The short sleeve hydroguard is made from interlock knit fabric, which stretches for comfort and mobility during your favorite water activities. Dri-FIT technology moves sweat away from your body to help you stay cool and dry before and after you hit the water. UPF 40+ protection helps to block damaging UV rays from passing through the material, while taping along the inside of the neck helps to reduce chafing.